<template>
  <el-row class="container">
    <el-col :span="24" class="header">
      <el-col :span="10" class="logo" :class="collapsed ? 'logo-collapse-width' : 'logo-width'">
        {{ collapsed ? '' : sysName }}
      </el-col>
      <el-col :span="10">
        <div class="tools" @click.prevent="collapse">
          <i class="fa fa-align-justify" />
        </div>
      </el-col>
      <el-col :span="4" class="userinfo">
        <el-dropdown trigger="hover">
          <span class="el-dropdown-link userinfo-inner">
            <img :src="sysUserAvatar">
            {{ sysUserName }}
          </span>
          <el-dropdown-menu slot="dropdown">
            <el-dropdown-item @click.native="account">设置</el-dropdown-item>
            <el-dropdown-item divided @click.native="logout">退出登录</el-dropdown-item>
          </el-dropdown-menu>
        </el-dropdown>
      </el-col>
    </el-col>
    <el-col :span="24" class="main">
      <aside :class="collapsed ? 'menu-collapsed' : 'menu-expanded'">
        <!--导航菜单-->
        <div v-show="!collapsed">
          <el-menu
            :default-active="$route.path"
            class="el-menu-vertical-demo"
            unique-opened
            router
            @open="handleOpen"
            @close="handleClose"
            @select="handleSelect"
          >
            <template v-for="(item, index) in activeRoutes">
              <el-submenu v-if="!item.leaf" :key="index" :index="index + ''">
                <template slot="title">
                  <i :class="item.iconCls" />
                  {{ item.label }}
                </template>
                <el-menu-item v-for="child in item.children" :key="child.path" :index="child.path">
                  {{ child.label }}
                </el-menu-item>
              </el-submenu>
              <el-menu-item
                v-if="item.leaf && item.children.length > 0"
                :key="item.children[0].path"
                :index="item.children[0].path"
              >
                <i :class="item.iconCls" />
                {{ item.children[0].label }}
              </el-menu-item>
            </template>
          </el-menu>
        </div>
        <!--导航菜单-折叠后-->
        <ul v-show="collapsed" ref="menuCollapsed" class="el-menu el-menu-vertical-demo collapsed">
          <li v-for="(item, index) in activeRoutes" :key="index" class="el-submenu item">
            <template v-if="!item.leaf">
              <div
                class="el-submenu__title"
                style="padding-left: 20px;"
                @mouseover="showMenu(index, true)"
                @mouseout="showMenu(index, false)"
              >
                <i :class="item.iconCls" />
              </div>
              <ul
                class="el-menu submenu"
                :class="'submenu-hook-' + index"
                @mouseover="showMenu(index, true)"
                @mouseout="showMenu(index, false)"
              >
                <li
                  v-for="child in item.children"
                  :key="child.path"
                  class="el-menu-item"
                  style="padding-left: 40px;"
                  :class="$route.path == child.path ? 'is-active' : ''"
                  @click="$router.push(child.path)"
                >
                  {{ child.label }}
                </li>
              </ul>
            </template>
            <template v-else>
              <li class="el-submenu">
                <div
                  class="el-submenu__title el-menu-item"
                  style="padding-left: 20px;height: 56px;line-height: 56px;padding: 0 20px;"
                  :class="$route.path == item.children[0].path ? 'is-active' : ''"
                  @click="$router.push(item.children[0].path)"
                >
                  <i :class="item.iconCls" />
                </div>
              </li>
            </template>
          </li>
        </ul>
      </aside>
      <section class="content-container">
        <div class="grid-content bg-purple-light">
          <el-col :span="24" class="breadcrumb-container">
            <strong class="title">{{ $route.meta.title }}</strong>
            <el-breadcrumb separator="/" class="breadcrumb-inner">
              <el-breadcrumb-item v-for="item in $route.matched" :key="item.path">
                {{ item.meta.title }}
              </el-breadcrumb-item>
            </el-breadcrumb>
          </el-col>
          <el-col :span="24" class="content-wrapper">
            <transition name="fade" mode="out-in">
              <router-view />
            </transition>
          </el-col>
        </div>
      </section>
    </el-col>
  </el-row>
</template>

<script>
export default {
  data() {
    return {
      sysName: '视频投票',
      collapsed: false,
      sysUserName: '',
      sysUserAvatar: '',
      permission: [],
      activeRoutes: []
    }
  },
  mounted() {
    var user = sessionStorage.getItem('user')
    if (user) {
      user = JSON.parse(user)
      this.sysUserName = user.loginName || ''
      this.sysUserAvatar = user.avatar || require('@/assets/avatar.jpg')
      this.permission = user.permission || []
    }
    // console.log(this.permission);
    const vRoutes = JSON.parse(JSON.stringify(this.$router.options.routes))
    for (let iRoutes = 0; iRoutes < vRoutes.length; iRoutes++) {
      const route = vRoutes[iRoutes]
      if (!route.hidden) {
        const nodeChildrens = []
        for (let iChildrens = 0; iChildrens < route.children.length; iChildrens++) {
          const children = route.children[iChildrens]
          // 权限列表中存在才显示
          if (!children.hidden && this.permission.indexOf(children.path) > -1) {
            nodeChildrens.push(children)
          }
        }
        // 如果存在至少一个Children才显示
        if (nodeChildrens.length > 0) {
          const node = {}
          node.label = vRoutes[iRoutes].label
          node.iconCls = vRoutes[iRoutes].iconCls
          node.leaf = vRoutes[iRoutes].leaf
          node.children = nodeChildrens
          this.activeRoutes.push(node)
        }
      }
    }
    console.log(this.activeRoutes)
  },
  methods: {
    onSubmit() {
      console.log('submit!')
    },
    handleOpen() {
      // console.log('handleOpen');
    },
    handleClose() {
      // console.log('handleClose');
    },
    handleSelect: function(a, b) {},
    // 退出登录
    account: function() {
      this.$router.push('/account')
    },
    // 退出登录
    logout: function() {
      var _this = this
      this.$confirm('确认退出吗?', '提示', {
        type: 'warning'
      })
        .then(() => {
          sessionStorage.removeItem('user')
          _this.$router.push('/login')
        })
        .catch(() => {})
    },
    // 折叠导航栏
    collapse: function() {
      this.collapsed = !this.collapsed
    },
    showMenu(i, status) {
      this.$refs.menuCollapsed.getElementsByClassName('submenu-hook-' + i)[0].style.display = status ? 'block' : 'none'
    }
  }
}
</script>

<style scoped lang="scss">
@import '../styles/vars.scss';

.container {
  position: absolute;
  top: 0px;
  bottom: 0px;
  width: 100%;
  .header {
    height: 60px;
    line-height: 60px;
    background: $color-primary;
    color: #fff;
    .userinfo {
      text-align: right;
      padding-right: 35px;
      float: right;
      .userinfo-inner {
        cursor: pointer;
        color: #fff;
        img {
          width: 40px;
          height: 40px;
          border-radius: 20px;
          margin: 10px 0px 10px 10px;
          float: right;
        }
      }
    }
    .logo {
      //width:230px;
      height: 60px;
      font-size: 22px;
      padding-left: 20px;
      padding-right: 20px;
      border-color: rgba(238, 241, 146, 0.3);
      border-right-width: 1px;
      border-right-style: solid;
      img {
        width: 40px;
        float: left;
        margin: 10px 10px 10px 18px;
      }
      .txt {
        color: #fff;
      }
    }
    .logo-width {
      width: 230px;
    }
    .logo-collapse-width {
      width: 60px;
    }
    .tools {
      padding: 0px 23px;
      width: 14px;
      height: 60px;
      line-height: 60px;
      cursor: pointer;
    }
  }
  .main {
    display: flex;
    // background: #324057;
    position: absolute;
    top: 60px;
    bottom: 0px;
    overflow: hidden;
    aside {
      flex: 0 0 230px;
      width: 230px;
      // position: absolute;
      // top: 0px;
      // bottom: 0px;
      .el-menu {
        height: 100%;
      }
      .collapsed {
        width: 60px;
        .item {
          position: relative;
        }
        .submenu {
          position: absolute;
          top: 0px;
          left: 60px;
          z-index: 99999;
          height: auto;
          display: none;
        }
      }
    }
    .menu-collapsed {
      flex: 0 0 60px;
      width: 60px;
    }
    .menu-expanded {
      flex: 0 0 230px;
      width: 230px;
    }
    .content-container {
      // background: #f1f2f7;
      flex: 1;
      // position: absolute;
      // right: 0px;
      // top: 0px;
      // bottom: 0px;
      // left: 230px;
      overflow-y: scroll;
      padding: 20px;
      .breadcrumb-container {
        //margin-bottom: 15px;
        .title {
          width: 200px;
          float: left;
          color: #475669;
        }
        .breadcrumb-inner {
          float: right;
        }
      }
      .content-wrapper {
        background-color: #fff;
        box-sizing: border-box;
      }
    }
  }
}
</style>
